<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>
<!--音频播放-->
   <audio src="source/music.m4a" controls="controls"></audio>
<!--换行-->
   <br><br><br><br><br>
<!--视频播放-->
   <video src="source/BigBuck.m4v" controls="controls"></video>
</body>
</html>